Wrapper for C++ network simplex solver

[zsteve]

I'm working on getting a wrapper for the C++ EMD solver that PythonOT uses under the hood. This is orders of magnitude faster than using generic LP solvers.
Currently I have a quick and dirty working example of this: https://github.com/zsteve/EMDNetworkSimplex.jl, the next step would be e.g. to set up BinaryBuilder etc.
I am wondering if the best way to make this work is to incorporate it as part of this package, or to make it available as a dependency?
The former option might be better to avoid overly fragmenting packages.